UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Conchoidal, Uneven, ConchoidalArthur Thomas, Brittle
Perfect on {110} at 56° and 124°; partings on {010} and {100}
Distinct on {10 1 1}, imperfect on {01 1 2}
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
Ag 3SbS 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references